package com.king.system.service.impl;

import com.king.common.constant.UserConstants;
import com.king.common.core.domain.entity.SysDictData;
import com.king.common.core.domain.entity.SysDictType;
import com.king.common.exception.ServiceException;
import com.king.common.utils.DictUtils;
import com.king.common.utils.StringUtils;
import com.king.system.mapper.SysDictDataMapper;
import com.king.system.mapper.SysDictTypeMapper;
import com.king.system.service.ISysDictTypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.PostConstruct;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


/**
 * 字典业务控制层
 */
@Service
public class SysDictTypeServiceImpl implements ISysDictTypeService {
    @Autowired
    private SysDictTypeMapper dictTypeMapper;

    @Autowired
    private SysDictDataMapper dictDataMapper;


    /**
     * 项目启动时，初始化字典到缓存
     */
    @PostConstruct
    public void init(){
        loadingDictCache();
    }
    /**
     * 根据条件分页查询字典类型
     *
     * @param dictType 字典类型信息
     * @return 字典类型集合信息
     */
    @Override
    public List<SysDictType> selectDictTypeList(SysDictType dictType) {
        return dictTypeMapper.selectDictTypeList(dictType);
    }

    /**
     * 根据所有字典类型
     *
     * @return 字典类型集合信息
     */
    @Override
    public List<SysDictType> selectDictTypeAll() {
        return dictTypeMapper.selectDictTypeAll();
    }

    /**
     * 根据字典类型查询字典数据
     *
     * @param dictType 字典类型
     * @return 字典数据集合信息
     */
    @Override
    public List<SysDictData> selectDictDataByType(String dictType) {
        List<SysDictData> dictList = DictUtils.getDictCache(dictType);
        if (StringUtils.isNotEmpty(dictList)) {
            return dictList;
        }
        dictList = dictDataMapper.selectDictDataByType(dictType);
        if (StringUtils.isNotEmpty(dictList)) {
            DictUtils.setDictCache(dictType, dictList);
            return dictList;
        }
        return null;
    }
    /**
     * 根据字典类型ID查询信息
     *
     * @param dictId 字典类型ID
     * @return 字典类型
     */
    @Override
    public SysDictType selectDictTypeById(Long dictId) {
        return dictTypeMapper.selectDictTypeById(dictId);
    }


    @Override
    public SysDictType selectDictTypeByType(String dictType) {

        return dictTypeMapper.selectDictTypeByType(dictType);
    }

    /**
     * 批量删除字典类型信息
     *
     * @param dictIds 需要删除的字典ID
     */
    @Override
    public void deleteDictTypeByIds(Long[] dictIds) {
        for(Long dictId:dictIds){
            SysDictType dictType = selectDictTypeById(dictId);
            if(dictDataMapper.countDictDataByType(dictType.getDictType()) > 0){
                throw new ServiceException(String.format("%1$s已分配,不能删除", dictType.getDictName()));
            }
            dictTypeMapper.deleteDictTypeById(dictId);
            DictUtils.removeDictCache(dictType.getDictType());
        }
    }

    @Override
    public void loadingDictCache() {
        SysDictData dictData = new SysDictData();
        dictData.setStatus("0");
        Map<String,List<SysDictData>> dictDataMap = dictDataMapper.selectDictDataList(dictData)
                .stream().
                collect(Collectors.groupingBy(SysDictData::getDictType));
        for(Map.Entry<String,List<SysDictData>> entry:dictDataMap.entrySet()){
            DictUtils.setDictCache(entry.getKey(),
                    entry.getValue()
                    .stream()
                            .sorted(Comparator.comparing(SysDictData::getDictSort))
                            .collect(Collectors.toList()));
        }

    }
    /**
     * 清空字典缓存数据
     */
    @Override
    public void clearDictCache() {
        DictUtils.clearDictCache();
    }

    /**
     * 重置字典缓存数据
     */
    @Override
    public void resetDictCache() {
        clearDictCache();
        loadingDictCache();
    }

    /**
     * 新增保存字典类型信息
     *
     * @param dictType 字典类型信息
     * @return 结果
     */
    @Override
    public int insertDictType(SysDictType dictType) {
        int row = dictTypeMapper.insertDictType(dictType);
        if(row > 0){
            DictUtils.setDictCache(dictType.getDictType(), null);
        }
        return row;
    }
    /**
     * 修改保存字典类型信息
     *
     * @param dictType 字典类型信息
     * @return 结果
     */

    @Override
    @Transactional
    public int updateDictType(SysDictType dictType) {
        SysDictType oldDict = dictTypeMapper.selectDictTypeById(dictType.getDictId());
        int ret = dictTypeMapper.updateDictType(dictType);
        if(ret > 0){
            List<SysDictData> dictDatas = dictDataMapper.selectDictDataByType(dictType.getDictType());
            DictUtils.setDictCache(dictType.getDictType(), dictDatas);
        }
        return ret;
    }

    /**
     * 校验字典类型是否唯一
     * @param dictType 字典类型
     * @return
     */
    @Override
    public String checkDictTypeUnique(SysDictType dictType) {
        Long dictId = StringUtils.isNull(dictType.getDictId()) ? -1L : dictType.getDictId();
        SysDictType dType = dictTypeMapper.checkDictTypeUnique(dictType.getDictType());
        if(StringUtils.isNotNull(dType)){
            return UserConstants.NOT_UNIQUE;
        }
        return UserConstants.UNIQUE;
    }
}
